code: def test_is_module(self):
      m = FakeModule(1.0)
      self.assertTrue(tensor_util.is_module(m))
      self.assertFalse(tensor_util.is_module(tf.Variable(0.0)))
  
imports: import numpy
  import tensorflow.compat.v2
  from tensorflow_probability.python.bijectors import scale
  from tensorflow_probability.python.distributions import normal
  from tensorflow_probability.python.internal import tensor_util
  from tensorflow_probability.python.internal import test_util
  from tensorflow_probability.python.util import deferred_tensor
label_desc: Use image node_id 5 for calling the VariableTrackingUtils obj's underlying member method code with example usage: obj.test_is_module() without return types